Filling in the gaps in biowaste biorefineries The use of the solid residue after enzymatic hydrolysis for the production of biopesticides through solid-state fermentation

Filling in the gaps in biowaste biorefineries : The use of the solid residue after enzymatic hydrolysis for the production of biopesticides through solid-state fermentation

Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.

Bibliographische Detailangaben
Veröffentlicht in:Waste management (New York, N.Y.). - 1999. - 161(2023) vom: 15. Apr., Seite 92-103
1. Verfasser: Molina-Peñate, Esther (VerfasserIn)
Weitere Verfasser: Del Carmen Vargas-García, María, Artola, Adriana, Sánchez, Antoni
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2023
Zugriff auf das übergeordnete Werk:Waste management (New York, N.Y.)
Schlagworte:Journal Article Biopesticide Biorefinery Biowaste Enzymatic hydrolysis Solid-state fermentation Biological Control Agents Solid Waste
Beschreibung
Zusammenfassung:Copyright © 2023 The Author(s). Published by Elsevier Ltd.. All rights reserved.
Alternative production processes using waste are necessary to preserve non-renewable resources and prevent scarcity of materials for future generations. Biowaste, the organic fraction of municipal solid waste, is abundant and easily available. It can be fractionated into building blocks for which fermentative processes can be designed. By using solid-state fermentation, this paper proposes a method of valorizing biowaste's residual solid fraction after enzymatic hydrolysis. In a 22 L bioreactor, two digestates from anaerobic digestion processes were evaluated as cosubstrates to modify the acidic pH of the solid residue after enzymatic hydrolysis and promote the growth of the bacterial biopesticide producer Bacillus thuringiensis. Regardless of the cosubstrate used, the final microbial populations were similar indicating microbial specialization. The final product contained 4 × 108 spores per gram of dry matter and also crystal proteins of Bacillus thuringiensis var israelensis, which have insecticidal activity against pests. This method allows for the sustainable use of all materials liberated during the enzymatic hydrolysis of biowaste, including residual solids
Beschreibung:Date Completed 24.03.2023
Date Revised 24.03.2023
published: Print-Electronic
Citation Status MEDLINE
ISSN:1879-2456
DOI:10.1016/j.wasman.2023.02.029